git.m6w6.name Git - m6w6/libmemcached/blob - clients/memcat.c

   1 #include <stdio.h>
   2 #include <inttypes.h>
   3 #include <string.h>
   4 #include <unistd.h>
   5 #include <getopt.h>
   6 #include <libmemcached/memcached.h>
   7
   8 #include "utilities.h"
   9
  10 #define PROGRAM_NAME "memcat"
  11 #define PROGRAM_DESCRIPTION "Cat a set of key values to stdout."
  12
  13
  14 /* Prototypes */
  15 void options_parse(int argc, char *argv[]);
  16
  17 static int opt_binary= 0;
  18 static int opt_verbose= 0;
  19 static int opt_displayflag= 0;
  20 static char *opt_servers= NULL;
  21 static char *opt_hash= NULL;
  22
  23 int main(int argc, char *argv[])
  24 {
  25   memcached_st *memc;
  26   char *string;
  27   size_t string_length;
  28   uint32_t flags;
  29   memcached_return rc;
  30   memcached_server_st *servers;
  31
  32   options_parse(argc, argv);
  33
  34   if (!opt_servers)
  35   {
  36     char *temp;
  37
  38     if ((temp= getenv("MEMCACHED_SERVERS")))
  39       opt_servers= strdup(temp);
  40     else
  41     {
  42       fprintf(stderr, "No Servers provided\n");
  43       exit(1);
  44     }
  45   }
  46
  47   memc= memcached_create(NULL);
  48   process_hash_option(memc, opt_hash);
  49
  50   servers= memcached_servers_parse(opt_servers);
  51
  52   memcached_server_push(memc, servers);
  53   memcached_server_list_free(servers);
  54   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, opt_binary);
  55
  56   while (optind < argc)
  57   {
  58     string= memcached_get(memc, argv[optind], strlen(argv[optind]),
  59                           &string_length, &flags, &rc);
  60     if (rc == MEMCACHED_SUCCESS)
  61     {
  62       if (opt_displayflag)
  63       {
  64         if (opt_verbose)
  65           printf("key: %s\nflags: ", argv[optind]);
  66         printf("%x\n", flags);
  67       }
  68       else
  69       {
  70         if (opt_verbose)
  71           printf("key: %s\nflags: %x\nlength: %zu\nvalue: ",
  72                  argv[optind], flags, string_length);
  73         printf("%.*s\n", (int)string_length, string);
  74         free(string);
  75       }
  76     }
  77     else if (rc != MEMCACHED_NOTFOUND)
  78     {
  79       fprintf(stderr, "memcat: %s: memcache error %s",
  80               argv[optind], memcached_strerror(memc, rc));
  81       if (memc->cached_errno)
  82         fprintf(stderr, " system error %s", strerror(memc->cached_errno));
  83       fprintf(stderr, "\n");
  84     }
  85     optind++;
  86   }
  87
  88   memcached_free(memc);
  89
  90   if (opt_servers)
  91     free(opt_servers);
  92   if (opt_hash)
  93     free(opt_hash);
  94
  95   return 0;
  96 }
  97
  98
  99 void options_parse(int argc, char *argv[])
 100 {
 101   int option_index= 0;
 102   int option_rv;
 103
 104   memcached_programs_help_st help_options[]=
 105   {
 106     {0},
 107   };
 108
 109   static struct option long_options[]=
 110     {
 111       {"version", no_argument, NULL, OPT_VERSION},
 112       {"help", no_argument, NULL, OPT_HELP},
 113       {"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 114       {"debug", no_argument, &opt_verbose, OPT_DEBUG},
 115       {"servers", required_argument, NULL, OPT_SERVERS},
 116       {"flag", no_argument, &opt_displayflag, OPT_FLAG},
 117       {"hash", required_argument, NULL, OPT_HASH},
 118       {"binary", no_argument, NULL, OPT_BINARY},
 119       {0, 0, 0, 0},
 120     };
 121
 122   while (1)
 123   {
 124     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 125     if (option_rv == -1) break;
 126     switch (option_rv)
 127     {
 128     case 0:
 129       break;
 130     case OPT_BINARY:
 131       opt_binary = 1;
 132       break;
 133     case OPT_VERBOSE: /* --verbose or -v */
 134       opt_verbose = OPT_VERBOSE;
 135       break;
 136     case OPT_DEBUG: /* --debug or -d */
 137       opt_verbose = OPT_DEBUG;
 138       break;
 139     case OPT_VERSION: /* --version or -V */
 140       version_command(PROGRAM_NAME);
 141       break;
 142     case OPT_HELP: /* --help or -h */
 143       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 144       break;
 145     case OPT_SERVERS: /* --servers or -s */
 146       opt_servers= strdup(optarg);
 147       break;
 148     case OPT_HASH:
 149       opt_hash= strdup(optarg);
 150       break;
 151     case '?':
 152       /* getopt_long already printed an error message. */
 153       exit(1);
 154     default:
 155       abort();
 156     }
 157   }
 158 }